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Old 07-08-2014, 06:19 AM   #1
oldroadie OP
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Can you explain this?

Many times when working on a classic bike project I'll find modifications from previous owners I can't explain. Not many owners keep detailed logs and without some history I'm left to wonder why or what a PO was thinking. I offer these pictures as evidence:





The holes are nicely finished in that they have paint (doesn't seem to be powder coat) on the inside edges, no tooling marks and it really looks like a factory job. Well, except for the weird randomness of the placement. That one bigger hole in the curved section had to be carefully cut, one of the other holes has wear marks like something had been bolted onto the cover.

Since the bike in question is a 1987 R80 there is no free access to the air filter or intake runners from the starter like on my old /5. Anyone know what may have been going on here?
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Old 07-08-2014, 06:24 AM   #2
manic mechanic
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The holes are from the fuel solenoids and hoses that were installed as part of the anti-pollution stuff. You might find between the airbox and the exhaust flange a metal tube to lean out the exhaust emissions, unless those have also been removed and plugged.
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Old 07-08-2014, 06:40 AM   #3
Jim Day
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Obviously Swiss...



Or maybe California pollution control.
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Old 07-08-2014, 06:41 AM   #4
oldroadie OP
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Thank you. I'll need to take a closer look in there and see what else is modified/missing. It had me baffled with the lack of symmetry.
Oy, Jim, what a mess that makes. I'd probably have passed on a bike that had that Swiss spaghetti dangling about.
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Old 07-08-2014, 06:58 AM   #5
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That's messy. My first guess was a very determined rodent.
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Old 07-08-2014, 07:02 AM   #6
maxpowers410
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Quote:
Originally Posted by Jim Day View Post
Obviously Swiss...



Or maybe California pollution control.
the swiss are psycho everything
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Old 07-08-2014, 07:16 AM   #7
op48no1
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If you search around, you'll find a lot of information on the air injection system and how to remove it. Though, by the looks of it, the prior owner did that already.

The BMW engineers must have been disgusted when they were ordered to find a way to install all that junk.

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Old 07-08-2014, 07:22 AM   #8
Jim Day
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Originally Posted by oldroadie View Post
Oy, Jim, what a mess that makes. I'd probably have passed on a bike that had that Swiss spaghetti dangling about.
It looked better when it was all connected

It's the California setup for the evaporative emission control system, so I'm thinking your bike was first sold in California. Nothing wrong with the system when it works I just hate the slight delay between when you turn the key and the fuel getting to the carbs. I pulled mine on my R100R so I have a set of the internal workings if you want them but honestly this is one of those situations where less is really more.
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Old 07-08-2014, 07:31 AM   #9
oldroadie OP
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Thanks for the offer but I'm thinking I'm probably better off searching threads that finish the removal process in a neat fashion. This is the latest model project bike I've tackled, the first from the 80's and I really had not considered CA emissions as a contributor this far from the left coast. Good, more to learn.
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Old 07-08-2014, 07:41 AM   #10
globalt38
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Quote:
Originally Posted by oldroadie View Post
Thanks for the offer but I'm thinking I'm probably better off searching threads that finish the removal process in a neat fashion. This is the latest model project bike I've tackled, the first from the 80's and I really had not considered CA emissions as a contributor this far from the left coast. Good, more to learn.
Perhaps search for a "Non-PC" un-holy (according to CA at least) starter cover to replace it?

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Old 07-08-2014, 07:45 AM   #11
oldroadie OP
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Yep, new to me cover in hand and it's already on the bike. I didn't think it was a great idea to have those holes potentially letting water in over the starter.
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Old 07-08-2014, 07:45 AM   #12
Bill Harris
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I'd be (neurotically) inclined to heliarc aluminum plugs into all the errrant holes to return it to as natur eintended, or just hunt up a "non-EPA" starter cover.

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Old 07-08-2014, 07:47 AM   #13
jackd
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Anyone got a P/N for a cover that doesn't have all the holes drilled in it? I might get one and change mine out as well.
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Old 07-08-2014, 07:50 AM   #14
globalt38
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The old one would probably make a nice gerbil/hamster cage accessory if you have kids that are into that....
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Old 07-08-2014, 09:23 AM   #15
supershaft
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Quote:
Originally Posted by Jim Day View Post
It looked better when it was all connected

It's the California setup for the evaporative emission control system, so I'm thinking your bike was first sold in California. Nothing wrong with the system when it works I just hate the slight delay between when you turn the key and the fuel getting to the carbs. I pulled mine on my R100R so I have a set of the internal workings if you want them but honestly this is one of those situations where less is really more.
That evap setup was a Ca. mandate but all bikes sold in the US had it. Dealers outside Ca. were suppose to disable it. Most dealers in Ca. disabled it since they didn't work. Huge drain on the charging system and the setup can leave you dead in the water.

BTW, the exhaust air pumps were not a EPA mandate. BMW did that on their own. BMWAG goes for green. Same deal with cats on oilheads.

supershaft screwed with this post 07-08-2014 at 09:37 AM
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